Method of superheating steam.



Patented Sept. 23, I902.

H WEBSTER. METHOD OF SUPEBHEATING STEAM.

(Application filed Dec. 12, 1901.)

2 Sheets-8heet I.

(No Model.)

No. 709,655. Patented Sept. 23, "902.

H. WEBSTER.

METHOD OF SUPEBH EATING STEAM.

(Applicatiuu filed Dec. 12, 190%) (No Model.) 2 Sheets-Sheet 2.

WITNESSES: 2 v INVENTOR @VwfiF/m ewn vnwnn ATTORNEY ma Norms vzrzns co, PNDTO-LITHOY, WASHINGTON, u. c

llnrtnn States Patent @rmcn.

HOSEA IVEBSTER, OF MONTOLAIR, NElV JERSEY.

METHOD 0F SUPEPtl-lEATlNG STEAM.

SPECIFICATION forming part of Letters Patent No. 709,655, dated September 23, 1902,.

Application filed December 12,1901. $eria1N0. 85,554. (No model) To (tZZ whom, it 717/7 concern:

Be it known that I, HOSEA WEBSTER, a citizen of the United States, residing at Montclai r, in the county of Essex and State of New Jersey, haveiuvented certain new and useful Improvements in Methods ol Super-heating Steam, of which the following is a specification, reference being had therein to the accom panying drawings.

This invention relates to a method of superheating steam toa highdegree and also in controlling the temperature of the same.

In order that others may understand and practice the invention, 1 will first proceed to describe a steam-generator fitted with devices whereby the invention may be carried out and subsequently to point outiu the appended claims its novel characteristics.

In the accompanying drawings, forming a part of this specification, Figure l is a top view, partly in section, on the line 11, Fig. 2; Fig. 2, a side view of a steam-generator and a separate superheating apparatus shown in section on the line 2 2, Fig.1; and Fig. 3 is a side view of the steam-generator on the line 3 3, Fig. 1, embodying a superheatiug device within its combustion -space in which the method of operation claimed is carried out.

The main parts of the generator consist of the furnace A, watercirculating tube B, steam and water drums O, and uptake D. In the several figures a steam-superheating deviceis shown at 1 located outside of thegenerator and at 2 in Figs. 1 and 3 within the combustion-space'of the generator. The exterior superheater 1 includes a furnace 3, incased steam tubes or coils 4,and passages 5, leading from the furnace to and among the tubes 4 and to the uptake D direct by the conduit 6 or to the combustion-space of the steam-generator through the passage 7, the products of combustion from the superheater being diverted to either the conduit 6or passage 7 by means of the dampers S and 9,arranged therein and adapted to open or close the respective passages, as required, the course of the products of combustion being indicated by the arrows in the respective figures. The steamsuperheating pipes or coils at communicate with the steam-drums O of the generator through the pipe 10 and with the steam-outlet through the pipe 12. The pipe 12,1eading from the superheater, is fitted with athermostat 13, which is connected with the dampers l5 and 16 in the escape-passages 17 and 18 to open or close the same automatically,and therebycontrol the temperature 0 f the su perheated steam.

The superheating device 2 islocated within the combustion space of the generator, as shown in Figs. 1 and 3, and is exposed to the direct combustion of the generator-furnace and communicates with the steam-space of the drum 0 and the pipe 10, leading to the coil 4 of the auxiliary superheater 1.

In operation the saturated steam taken from the steam-space of the drum 0 is superheated in the primary superheating device 2,

then directed through the coil 4: of the T|.LlXlliary superheater1,wherein its temperature is augmented, and then conveyed to the steamoutlet. hen the temperature of the superheated steam reaches a maximum degree desired, the thermostat-valve opens to admit steam to the cylinder and piston 19, from which movement is transmitted to the respective dampers 15 or 16 in the manner well understood in similar uses.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The method herein described, consisting in superheating steam, primarily by the heat of the combustion in the generator, and then augmenting the temperature of the steam superheated, by a separate and independent source of heat, as set forth.

2. The method herein described, consisting in superheating steam, primarily by the heat of the combustion in the generator, then augmenting the temperature of said superheated steam by a separate and independent source of heat, and then utilizing the waste products of the latter combustion to augment the primary superheating of the steam in the generator, as set forth.

3. The method herein described, consisting in first superheating steam by the heat of combustion in the generator, second, augmenting the temperature of the steam superheated by an auxiliary source of heat, and third, regulating the temperature of the superheated steam, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

HOSEA WVEBSTER.

Witnesses:

EMMA BLAINE WILSON, HARRIS R. GREENE. 

